I have it running but I can't get any sensible output. I think it may may be related to the gain settings but it's really hard to know what to set the values to. I had hoped to use AGC but that doesn't appear to be the enabled and it's unclear how you would turn it on. There was also some changes in the latest API for AGC and I wondered if they had been incorporated into SoapySDR? There also doesn't appear to be anyway of setting sample rate or if bandwidth?

I just wondered if anyone else has this working and could share their settings/work.

Reviving this old thread. I am currently investigating if it is possible to automate Power / SNR measurements with the RSP2. I find SDRuno very useful but lacking in this area.

Did you ever have success with rx_power? I have tried using it a bit, but as far as I can tell the power data it is giving me back is not accurate. I know this because I am injecting a signal of known frequency and power directly to the RSP2 via SMA cable.

We'll also be duplicating the CAT command that currently returns dBfs to also return dBm, so automating measurements with a CAT program might suit your need?

Best regards,

Andy

I've tried using Power/SNR to CSV data with my antenna direction data correlated by time. But this requires a lot of manual data manipulation. Doing spreadsheet macros is not my forte.

I would really like to use CAT to get dBm values. I've tried the standard SM0; CAT and get about 5 db per the 0-20 return value. This is not enough resolution for my use. I've already written a signal measurement program in C# that gets dBm from Flex radios. Would like to add SDRuno. Could really use dBm.

What is the CAT command and it's syntax going to be? When? I'll beta test.

Thanks Andy,
I don't have an easy test project available. I could spend a day or two to put something together, if needed, to move this along.

But I think the easiest way to test CAT commands is with a serial port Terminal program (I use PuTTY) in conjunction with a virtual serial port cable. I just connected to SDRuno v1.22 and get the expected responses. Right now I tested SM1; thru SM2;, all return SM0004; (or so... my current noise floor on 7 MHz CW 500Hz BW).

Testing with a Terminal program won't tell you everything of course. For instance, my signal plotter program polls the radio as quickly as every 25 ms to allow smoothing out the plot. Not always necessary. Good for smoothing CW or SSB data but not needed for steady carrier signals like AM.

Thanks for the support. Looking forward to v1.3 and hearing from you.
--BillC

It works as advertised in the Version 1.3 (14th March 2019) release notes:
• Extended SM CAT command for power level to return dBm instead of S-Meter
- SM1; return VFO power in dBm as a positive number: SM00084; returned = -84 dBm

Since CAT data comes from each serial port, I can get separate signal strength from each VRX (virtual receiver). Very cool.